Selective wheel drive mechanism



Dec. 15, 1931. H, H, BARBER 1,836,003

SELECTIVE WHEEL DRIVE MECHANISM Filed Jan. 20, 1928 5 SheetS -Sheet 1 Fild Jan. 20, 1928 s Sheets-Sheet 2 Harry )5. flax-bar Dec. 15, 1931. BARBER 1,836,003

SELECTIVE WHEEL DRIVE MECHANISM Filed Jan. 20, 1928 5 Sheets-Sheet 3 L Az7 5 Dec. 15, 1931. H. H. BARBER SELECTIVE WHEEL DRIVE MECHANISM Filed Jan. 20, 1928 5 Sheets-Sheet 4 A. flarber VE E 174777 11/! 1/11! 1/ 5 /////////1 III, 4

Dec. 15, 1931. BARBER 1,836,003

SELECTIVE WHEEL DRIVE MECHANISM Filed Jan. 20, 1928 5 Sheets-Sheet 5 Harry [2. 502256? Patented Dec. 15, 1931 UNITED STATES PATENT osslcs HARRY H. BARBER, OF AURORA, IIL'INOIS, ASBIGNOR T BAEBER-GREENE CO.,-A

- CORPORATION OF ILLINOIS SELECTIVE WHEEL DRIVE MECHANISM Application filed January 90, 1928. Serial No. 248,081.

This invention relates toa portable conveyor, and it is among the objects of this invention to provide an improved drive and control therefor, an adjustable support for the nose of the boom wh1ch also prevents t pping of the conveyor frame, and material crushing and agitating means on the nose of the boom.

The invention comprises the novel struc- 1 ture and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims. v o

In the accompanying drawings, which 11- lustrate' apreferred form of this inventlon and in which similar reference numerals refer to similar features in the different views:

Figure 1 is a side elevational new of a portable conveyor involving this invention.

Figure 2 is a rear end elevational view of the conveyor.

Figure 3 is a fragmentary elevational new of the selective drive showing one driving position.

Figure 4 is a fragmentaryelevational view of the selective drive and appurtenant parts illustrating a different driving position.

Figure 5 is a sectional view upon the line V-V of Figure 4.

Figure 6 is an enlarged fragmentary ele vational view of the drive for the conveyor chain.

-Figure 7 is a sectional view taken upon the line VII-VII of Figure 13.

Figure 8 is an enlar ed sectional view taken upon the line VIII IIIof Figure 13.

Figure 9 is an enlarged sectional view taken upon the line IXIX of Figure 1.

Figure 10 is an enlar ed elevational new of the control levers an stops for the selective drive. v

Figure 11 is a fragmentary front and enlarged elevational view of the ad ustable frame for the front end of the boom.

.- Figure 12 is a side elevational view of said ad'ustable frame.

igure 13 is an enlar ed sectional view taken upon the line XI XIII of Figure 8.

Figure 14 is a fragmentary elevational view of a modified form of selective drive for the plate 9 has a slot 10, and

nectionwith the flanges 11 provide guideconveyor showing parts in section and in one operating position.

Figure 15 is a view similar to Figure 14 illustrating the parts in a different position.- Figure 16 is a fragmentary sectional view thru the manual control for the selective drive. I Y

The ortable conveyor is mounted u on a pair 0 wheels 1 u on an axle 2, whic carries the frame of t e conve or. Each wheel 1 has a gear 3 on its hub. The gears 3 are of slightly .less circumference than the rims of the wheels.

The frame of the conveyor truck consists of a transverse member 4 (Fig. 3) attached to the axle 2. A pair of spaced standards 5 rise from the frame member 4 for supporting the hoisting cables for the conveyor boom. A pair of upright angle members 6 (Fig. 2) are also supported by the transverse frame member 4. The members 4 and 5 are connected by an u per transverse member 7 which is braced the cross members 8.

Each angle member 6 has a plate 9 attached to its forwardly extendin flange. Each ong the vertical margins of these slots extend the outstanding flanges 11 (Fig. 13) of angle members secured to said plates. The slots 10 inconways for slidably receiving shaft bearin 12. The selector drive or power shaft 13 is. mounted in these bearings. It will be noted that each end of the selector drive shaft 13 carries a pinion 14 located in the plane of a ar 3.

ue to the slidable feature of the bearings 12, the selector shaft 13 may be elevated or tilted as shown in Figures 3 and 4 for re.- pelling or steerin the conveyor truck. uitable mechanism as been provided for controlling the adjustments of the shaft 13. The illustrated embodiment of this mechanism consists of a shaft 15 journalled in the upper ortions of the plates 9 and an eccentric 16 edly secured upon said shaft, and an eccentric 17 loose upon said shaft, said eccen-. trics being connected by suitable han rs 18 with the bearings 12 of the shaft 13. t will be noted that each hanger 18. has a cylin- 25 3 on the truck wheels 1, as shown in Flgure strikes the stop 22, for elevating one of the 50 that operates a worm l A'lever or crank arm 19 is rigidly attached 1,880,003 drical bearing hub at each end. One bearing along the other standard 5 and over a guide hub of each han r rotativel receives one pulley 31 upon the top of such standard,

eccentric while t e other hu receives one of the bearings 12.

u on one end of the shaft whereby said aft may be rotated for rotating the eccentric 16 fixed thereon. A second crank or lever 20 is loosely mounted upon said shaft and is connected to the eccentric 17 as indicated at 21. A-stop lug 21a (Fig. 10 is pivoted.

upon the lever 19 and is adapte to strike a stop 22 when said leveris swung upwardly, as shownin dotted lines, to limit its movement. This position of lever 19 will shift the left hand gear on shaft 13 to neutral position. The lug 21a may then be swung upwardly and the lever 19 may then be swung further until it strikes a stop 23, in which position the left hand inion 14 will mesh with a gear 24 (Fig. 4 for operating the hoisting cable, as Wlll later more fully apear. p The levers 19 and 20 may be operated so that both pinions 14 engage the driving gears 2. In such position the conveyor truck will be driven forwardly in a straight line. When it is desired to steer the truck, one of the levers 19 and 20 is swung upwardly until it gears. In Figure 3, the right hand pinion 14 13 shown in such elevated position, the lever 20 having been swung upwardly against the stop 22. When both levers 19 and 20 are swung against the stop 22, both pinions 14 will be in neutral osition. From this position, the swingab e stop lug 21a on lever 19 may be swung out of the path of the lug 22, allowing lever 19 to be swung into engagement with the lug 23, for elevating pinion 14 into mesh with gear 24, as previously explained and as shown in Figure 4. If desirable, a stop lug 25 may be positioned upon plate 9 for limiting the downward movement of the two control levers and arresting the same when the pinions 14 are properly in mesh with the drlving gears 3.

The aforementioned gear 24 is secured upon a shaft 26, which is provided with a worm gear 27 secured upon a shaft 28 journalled in a suitable bearing support on the frame of the truck. A suitable winding drum 29 is secured upon the shaft 28 and a cable 30 is wound around this drum, one reach or branch of the cable extending upwardly over a guide pulley 31 upon the top of a standard, then down around a guide pulley 32 secured upon the boom 33. From the pulley 32 this branch of the cable extends to the said standard 5, where it is anchored, as indicated at 34. The other branch of this cable extends transversely from the drum 29 to a guide pulley 35. From the uide pulley 35 this branch of the cable extends upwardly thence around a uide pulley 32 on the boom, thence to the anc or 34 on the said standard 5. This single cable will always balance the boom as it is raised or lowered.

The boom 33, which may be of usual construction, supports an endless conveyor comprisin the driving chains 36 which are train over sprocket wheels 37 (only one of which is shown) upon a shaft 38 journalled in suitable bearings upon the bottom of the boom. It will be noted that the conveyor ing around the sprockets 37, which are located intermediate the ends of the conveyor. Suitable guide ulleys 39 and 40 guide the chains to and i om the sprockets 37. The guide pulleys 39 and 40 are respectively mounted upon shafts 41 and 42 .journalled upon the bottom of the boom. The ends of the shaft 42 project beyond the pulleys 40 and extend thru gusset lates 43 on the frame, whereby the boom ecomes pivoted to the frame upon the axis of shaft 42.

The gusset plates 43 are attached to frame members 44 and to frame members 45, which frame members comprise a art of the truck frame, as shown. Only one rame member 44 and one frame member 45 on one side of the machine can be seen. It will, however, be understood that the same are duplicated upon the other side of the machine. The frame members 45 are preferably connected by a transverse brace 45a, as shown in Figures 11 and 12.

An adjustable frame is pivoted to the frame members 45. This adjustable frame comprises braces 46 pivotally connected at one end to gusset plates 47 on the frame members 45. The free ends of the braces 46 are pivoted respectively to upright angle bars 48 (Figs. 11 and 12), which are rigidly connected by suitable cross members. To this end, gusset plates 49 are attached to the members 48, and a channel section 50 is riveted to the gussets and the upright members. The members 46 are also connected by cross braces 51, as shown in Figure 11. The channel section 50 supports a bearing socket 52 in which the yoke of a pilot wheel 53 is swivelled, upon which the adjustable frame is supported.

To the frame members 45,which are in the form of angle bars, are secured gusset plates 54, which overlap the upright members 48 of the adjustable frame. Each gusset plate 54 has .a chain 55 attached thereto and each chain carries a coupling pin 56. Each upright 48 is provided with a series of'holes 57 for receiving the coupling pins.

Obviously, as the boom is supported upon the mainframe of the conveyor truck by means of the shaft 42, and as the elevation of the main frame is determined by the adjustchains 36 are looped downwardly for passfrom place to place.

ment of the adjustable frame, the front or nose end of the boom ma be supported as desired. By" raising or owering the cou-- pling pins, the nose of the boom may be adusted to rest upon the ground or above the ground, as desired. Further, as the forward end of the boom is connected to the frame by the shaft 42, it will be impossible to tip the frame u wardly with respect to the axis of the whee s 1, on account 0 the weight of the boom.

The conveyor truck carries a power plant, which, in the present instance, is shown as an internal combustion engine 58, havin a driving shaft 59, which is geared by sproc et gearing to a driven shaft 61. The shaft 61 is geared by sprocket gearing 62 to'shaft 38 for driving the endless conveyor. The shaft 61 is also geared by sprocket gearing 63 to the selector shaft 13 for driving the conveyor In order to crush a rotary mechanism is provided upon the nose of the boom. This mechanism is best shown in Figures 1 and 9. It will be noted that the tail shaft 54, which carries the conveyor sprockets 65, supports a pair of disc wheels 66, which, in the present instance, are located in a plane outside of the sides of the. conveyor. These disc wheels may be provided with teeth167 for crushing and agitating the materia In Figures 14 and 15 is illustrated a modified form of selector drive which may be desirable in some instances. In this modified form, each truck wheel 1a has a circular series of apertures 68 for receiving the teeth of driving cogs or gears 69 fixed upon the selector shaft 13a. The shaft 13a has a sprocket wheel 70, by means of which it may be driven.

The selector shaft is connected by a pair of hangers 71 with manually operated levers 72 and 73. The left hand hanger 71 is connected between crank arms on a bushing 74, secured to the selector shaft 13a, and between crank arms on a bushing 75 secured to an operating shaft 76 suitably journalled in the frame of the machine. The right hand hanger 71 is also connected to a bushing 74 fixed on the selector shaft and to the arms of a bushing 77 loosely mounted upon the operating shaft. The aforementioned lever v7 2 is tends from the loose bushing. Obviously,.the

- hangers 71 may be independently operated for tilting the selector shaft, as shown in Figure 15, when it is desired to steer the wheels.

' When it is desired to drive straight, both pinions are shifted into engagement with the wheels 1a.

From the foregoing, it will be apparent that a greatly improved portable conveyor has been provided, which ossesses a si le driving and steering mec anism, in whlch and agitate the material. into which the nose of the boom is advanced,

the boom is also adjustab e and in which crushing means are provided on the boom.

I am aware that many changes may be made, and numerous details of construction pivoted to the frame which ismay be varied through a wide range without departin from the principles of this invention, an I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the priorart.

I claim as my invention: 1. In aconveyor truck, including a pair of ground wheels, each vwheel having a ear,

a ower shaft inionsu on said owers aft for meshing relation with the gears on said ground wheels, an operated shaft havinga pair of eccentrics thereon, hangers connecting said eccentrics and power shaft, and means for selectively operating said eccentrics.

2. In a conveyor truck, including a pair of ground wheels, each wheel having a gear, a"

tiltable power shaft, pinions u on said power shaft for meshing relation wit said gears, an operated shaft exte'ndin parallel to the power shaft, connections etween said power shaft and o erated shaft, and means for separately an selectively operating said connections.

3. In a conveyor truck, a pair of rotatable members, a tiltable power shaft, driving members u on said power shaft for rotating operated shaft, an eccentric loose upon said operated shaft, connections between said eccentrics and power shaft, a lever rigidly secured to said operated shaft for operating one eccentric, and a second lever loose upon said operated shaft and connected to the other eccentric.

5. In a vehicle of the class described a pair of ground wheels having gear enga 'ng means, a vertically tiltable power shaft means on said ground wheels, an operated shaft extending parallel to said power shaft, said operated shafthaving a crank member rigidly mounted thereon, a second crank member rotatably mounted upon said operated shaft, connections between said power shaft and crank members, and means ad'acent one end of said operated shaft for in ependently, and selectively operating said crank members. I

6. In a vehicle of the class described, a pair of. ground wheels, -a tiltable power shaft,

riv- 'n be a r fast upon the shaft 76 while the lever 73 ex- 1 g mem rs ereon or engaging gear driving members thereon for en aging said groun parallel to said power shaft and having a crank member thereon, a connection between said power shaft and. crank-member, a second crank member relatively rotatable with respect to said operated shaft, a connection between said power shaft and second crank member ahandle u on one end of said 0perated shaft and a andle upon said-second crank whereby. said cranks may beseparately and'independentl operated. In testlmony w ereof I have hereunto subscribed my name at Aurora, Kane County,

, Illinois. a a HARRY H. BARBER.

wheels, an operated sha extending 

